Corrugating-machine



E. O. LUNDIN.

CORRUGATING MACHINE.

APPLICATION FILED APR. 3. 1920.

Patented Jan. 11, 1921.

UNITED STATES PATENT OFFICE.

EMIL O. LUNDIN, NEWTON CENTER,

MASSACHUSETTS, ASSIGNOB TO STANDARD RATION OF MASSACHUSETTS.

CORRUGATING-MACHINE.

Application filed April 3,

To all whom it may concern: 1

.Be it known that I, Earn. 0. LUNDIN, a citizen of the United States,and resident of Newton Center, in the county of Middlesex and State ofMassachusetts, have invented new and useful Improvements ,inCorrugating-Machines, of which the following is a specification.

. This invention relates to improvementsin machines for currugatingmetal strips or similar material and for delivening the strips ofcorrugated material in predetermined lengths.

It is particularly adapted for forming the separator strips for use inthe improved box for crayons or the like, described and claimed in myapplication, Serial No. 270,- 990, filed on even date herewith.

It is an object of my invention to provide a simple, compact andefficient machine for forming strips of metal or the like, each striphaving a uniform number of corrugations and being of uniform. length. Itis an object to provide a machine which will corrugate a plurality ofstrips at one time; which will perform the corrugating and cutting intolengths at a single operation, and which is adjustable so as to operateupon material of differing characteristics.

Other and further objects will appear as the description proceeds.

I have illustrated a preferred embodiment of my invention in theaccompanying drawings in which,-

Figure 1 is a side elevation of my machine, partly broken away;

Fig. 2 is a plan View, also partly broken away;

Fig. 3 is a fragmentary detail View showing the method of adjusting thecutting anvil; and

Fig. 1 is a cross section on line 4:1 of

Fig. 3.

The particular embodiment of the invention chosen for the purpose ofillustration comprises in general a base 5, a lower roll standard 6, anupper roll standard 7, a lower roll arm 8, a lower roll 9, an upper roll10, a receiving idler roll arm 11, receiving idler rolls 12 and 13,a'delivery idler roller arm 14:, a delivery idler roller 15, and adriving pulley 28. E

The cutting knife 16 is earned by the upper roll 10, fitting into theapex of one of to be straight in general outline.

Specification of Letters Patent. P t t a 11, 1921,

1920. Serial No. 370,991.

the teeth. The base of the interfitting groove of the-roller 9 carriesthe anvil 17 which is adjusted by means of the slotted openings 18 andthe setscrews 19, best seen in Figs. 3 and 41.

The ribbon 20, which is to be corrugated is fed through the grooves 21,in the upwardly extending portion 22 of the arm 8. These grooves arepreferably closed by the cap 23 which is held in place by the screws 24.

The relation between the two rolls may be varied by placing the shaft 25in the lower opening 26 in the standard 6 instead of in the upperopening in which it is shown in Fig. 1. A fine adjustment of therelative position of the two rollers'is made by means of the screw 27which is threaded through the base 5.

In the operation of my machine, the ribbon or strip 20 is led from aspool held in any usual form of holder (not shown) and passes under theroller 13, over the roller 12, through one of the grooves 21 and thencebetween the rolls 9 and 10. The idler rollers 12 and 13 are notessential but have been found highly desirable in order to in sure aneven delivery of the ribbon under uniform tension.

The corrugated strips pass out under idler roller 15 which has beenfound desirable in order to counteract the tendency of the corrugatedmaterial to curl around the upper roll 10. This roller insures deliveryat a uniform point and also by preventing the curling above referred to,causes the strips A similar idler roller may be placed beneath the stripif desired.

It has been foundthat in the case of ribbons of slightly varyingcharacteristics, it is necessary to vary the relation of the two rollsin order to deliver a uniform product. This can be taken care of by thescrew 27. Since, in order to operate, the knife 16 and anvil 17 mustexactly contact, any adjustment of the screw 27 will necessitate acorresponding adjustment of theanvil 17 means of the screws 19.

If the machine is used to corrugate but one or two ribbons at a time,when the knife 16 has become dulled opposite certain slots 21, otherslots may be used.

While I have shown my machine as having rolls with but seven teeth, itis obvious that rollers with various numbers of teeth may be used, andalso that teeth of various contours may be used for forming variousforms of corrugations. One machine may be used at various times withdifferent forms and sizes of rolls, the difference in the necessarydistance from center to center of the rolls being taken care of by theadjustments made possible by the plurality of openings in the standard 6and by the screw 27.

I claim:

1. A machine of the character described comprising a pair of toothedcorrugating rolls, a tooth on one said roll carrying a cutter, and theintermeshing groove on the other roller carrying an anvil.

2. A machine of the character described comprising a pair of toothedcorrugating rolls, a tooth on one said roll carrying a cutter, theintermeshing groove on the other roller carrying an anvil, and means forad-- usting the relation between the cutter and anvil.

3. A machine of the character described comprising a base, a fixedstandard carrying a corrugating roll, a second fixed standard and an armadapted to be attached thereto at one of a plurality of points, a secondcorrugating roll carried by said arm in juxtaposition to the firstcorrugating roll, and means for adjusting the angular relation betweenthe arm and its standard and thiareby varying the relation between thetwo ro ls.

4. A machine of the character described comprising a base, a fixedstandard carrying a corrugating roll, a second fixed standard and an armadapted to be attached thereto at any one of a plurality of points, asecond corrugating roll carried by said arm in juxtaposition to thefirst corrugating roll, guide means carried by said arm adapted to guideto the rolls the material to be corrugated, and an idler rollersupported by said first fixed standard adapted to guide the materialaway from the rolls.

5. A machine of the character described comprising a base, a fixedstandard carrying a corrugating roll, a second fixed standard and an armadapted to be attached thereto at one of a plurality of points, a secondcorrugating roll carried by said arm in juxtaposition to thefirst-corrugating roll and idler rolls supported by said second standardand adapted to tension the material to -be corrugated.

6. A machine of the character described comprising a base, a fixedstandard carrying a corrugating roll, a second fixed standard and an armadapted to be attached thereto at any one of a plurality of points, asecond corrugating roll carried by said arm in juxtaposition to thefirst corrugatstandard adapted to tension the material to be corrugated,guide means carried by said arm adapted to guide to the rolls thematerial to be corrugated, and an idler roller supported by said firstfixed standard adapted to guide the material away from the rolls.

Signed by me at Boston, Massachusetts, this first day of April, 1920.

EMIL O. LUNDIN.

mg roll, idler rolls supported by said second

